| 单词 | mudstone |
| 释义 | > as lemmasmudstone mudstone n. Geology any sedimentary rock derived from clay or silt; esp. one lacking the laminations of shale. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > other argillaceous tough-stonea1641 waxen vein1681 mudstone1736 marlstone1766 marlite1794 pelite1879 lutite1904 1736 R. Ainsworth Thes. Linguæ Latinæ A mud stone, Saxum limosum. 1829 S. Glover Hist. County of Derby I. 50 In some places they are called clunch and mudstone. 1876 A. H. Green Geol. for Students: Physical Geol. ii. §6. 72 Mudstone is a convenient name for clayey rocks that have the appearance of partially hardened masses of sandy mud. 1957 H. S. Zim & P. R. Shaffer Rocks & Minerals 124 Shales or mudstones are mainly clays which have hardened into rock. 1991 New Civil Engineers 3 Oct. 25/2 Each beacon is founded on a 1.6m diameter steel pile which was inserted into a hole bored through sandstone and mercia mudstone. < as lemmas |
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